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  • June 5, 2018 at 11:14 pm #28624
    crankshaft
    Participant

    Thanks wristpin, I thought I would ask first before I bought some thread gauges.

    June 5, 2018 at 9:17 pm #28619
    crankshaft
    Participant

    Have had to machine exhaust port and drill and redrill and and tap stud holes. Are the threads on this engine UNF or BSF?

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    May 30, 2018 at 8:22 am #28603
    crankshaft
    Participant

    Many thanks, the HS suffix is mentioned in the technical spec and denotes 3hp instead of 2.5hp.

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